Vehicle cooling and heating system Audi A6 C5 Allroad

Engine cooling system — design description
Coolant is constantly circulating in the circuit, forced by the water pump. Until the engine is warmed up, coolant circulates only in the cylinder head, in the...

Coolant — draining and filling
The coolant should only be changed after repairs to the cooling system, which required draining the coolant. Coolant is not changed as part of maintenance. If...

Water pump — design description
3.0. Water pump. Cars with gasoline engine: 1 - water pump housing 2 - bolt. Tightening torque - 10 Nm 3 - coolant supply line 4 - sealing ring. To be replaced...

Water pump — removal and installation
Removal Cars with gasoline engines 1. Set the upper front cross member to the service position. 2. Disconnect the coolant supply hose from the pipe on the...

Thermostat — Removal, Installation and Checking
Removal Cars with gasoline engines 1. Drain the coolant (see the relevant chapter). 2. Disconnect the coolant hoses from the thermostat housing. 3. Unscrew the...

Radiator — removal and installation
Removal Cars with gasoline engines 1. Remove the cap from the coolant expansion tank. Caution! When the engine is hot, place a rag on the expansion tank cap...

Additional radiator — removal and installation
Attention! Additional radiators are supplied with cars with petrol engines. Removal 1. Remove the cap from the coolant expansion tank. Caution! When the engine...

Radiator Blower Fan — Removal and Installation
Removal Cars with gasoline engines Attention! Cars with a petrol engine are equipped with two radiator fans. Left radiator fan 1. Disconnect the plug (see...

Charge Air Cooling Radiator (Intercooler) — Design Description
8.0. Charge air cooling radiator (intercooler): 1 - boost air cooling radiator (intercooler) 2 - bolt. Tightening torque - 9 Nm 3 - fairing 4 - bolt with a...

Charge Air Cooling Radiator (Intercooler) — Removal and Installation
Removal 1. Remove the front bumper (see the relevant chapter). 2. Press the latches and remove the protective cover (see arrows in the illustration). 8.2....

Heater and air conditioner — general information
The air supplied to the cabin is sucked in from the outside through the fairing grille. Outside air passes through a dust filter (cabin filter) and enters the...

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A6(C5 AR, 1999-2005)

A6(C5, 1997-2004)

A6(C4, 1994-1997)